中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-Methylen-1,3-bis(phenylmethylen)cycloheptan | 115592-10-4 | C22H22 | 286.417 |
The synthesis and spectra (ultraviolet, infrared, and nuclear magnetic resonance) of some previously unknown 2,n-dibenzylidene and dicinnamylidenecyclanones where n = 5–10 are described. The spectra are in accord with the expected decrease in coplanarity of the conjugated groups with increasing ring size. trans-Ring hydrogen bonding may occur in 2,10-dibenzylidenecyclodecanone but no evidence is found for this effect in the parent cyclanone.
本文描述了一些之前未知的2,n-二苄基二烯和二肉桂基二烯环酮的合成和光谱(紫外、红外和核磁共振),其中n = 5-10。光谱结果与预期的随着环尺寸增加共轭基团共面性降低相符合。在2,10-二苄基二烯环癸酮中可能存在反式环氢键,但在母体环酮中没有发现这种效应的证据。